423198720 has 384 divisors, whose sum is σ = 1717541280. Its totient is φ = 94371840.

The previous prime is 423198707. The next prime is 423198751. The reversal of 423198720 is 27891324.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10321900 + ... + 10321940.

Almost surely, 2^423198720 is an apocalyptic number.

423198720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423198720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (858770640).

423198720 is an abundant number, since it is smaller than the sum of its proper divisors (1294342560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423198720 is an equidigital number, since it uses as much as digits as its factorization.

423198720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 423198720 is about 20571.7942824635. The cubic root of 423198720 is about 750.7836076602.

The spelling of 423198720 in words is "four hundred twenty-three million, one hundred ninety-eight thousand, seven hundred twenty".